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Warning a child that something, like a vaccine shot, will hurt can actually increase their perception of the pain.

Humans and other primates often reciprocate good deeds. A new study suggests a nonprimate, the dwarf mongoose, does so, too, even after a delay. Christopher Intagliata reports.

During extreme heat waves, a species of eucalyptus copes by releasing water and taking advantage of evaporative cooling. Other trees may do the same.

The best facial-recognition algorithms are now as good as the best forensic examiners are. But the best results come by combining human and computer skills. Christopher Intagliata reports.

Sea lions and fur seals in Uruguay have become a tourist attraction—but the animals have become less, not more, accepting of humans. Jason G. Goldman reports. 

An evolutionary analysis of pop tunes revealed that over the past 30 years songs have grown sadder—but the big hits buck that trend. Christopher Intagliata reports. 

Pediatric cardiologist Ismée Williams discusses her young adult novel, Water in May, about a teenage girl whose newborn has a life-threatening heart condition.

Edinburgh University paleontologist Steve Brusatte talks about his May 2018 Scientific American article, "The Unlikely Triumph of the Dinosaurs," and his new book, The Rise and Fall of the Dinosaurs: A New Hist...

The new Google AI voice assistant, called Duplex, highlights the intricacies of carrying out a mundane human-style conversation, as it keeps you off the phone.

Orangutans were observed to use plant extracts to treat their own pain.